# coding=utf-8
# 代码文件：chapter1/ch1.12.2-1.py

users1 = ['Tony', 'Tom', 'Ben', 'Alex']
print(users1)

users_filter = filter(lambda u: u.startswith('T'), users1)

print(users_filter)
users2 = list(users_filter)
print(users2)

users3 = list(users_filter)
print(users3)
